can you put regular weight plates in the bag to increase weight?

We recommend using the included weights that come with this product to assure that it works as desired.

If using on grass will it kill the grass?

No- the SpeedSac will not kill grass.

i live in AZ grass is scarce out here. will this die on pavement/parking lot ? lol

It’s good on grass, astroturf etc. I can’t vouch for pavement, concrete, gravel etc.

My 14 year old son said it easy just Velcro it around ur waist.

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Description

⚡️ Unlock explosive speed and unstoppable strength with every pull!

COMPLETE TRAINING KIT - Includes sled shell, 3 weight bags (sand not included), leash, and belt—everything you need to elevate your lower-body power.
BUILT TO LAST ANYWHERE - Rugged nylon shell and secure Velcro straps ensure durability on grass, turf, or wood—ready for any training environment.
UNIVERSAL FIT COMFORT - Adjustable leash and waist belt accommodate all athlete sizes for a personalized, secure fit during intense sessions.
360 DEGREE MOBILITY BOOST - Train in every direction with the innovative belt ring, enhancing strength and agility beyond straight-line speed.
CUSTOMIZABLE RESISTANCE LEVELS - Three removable 10-lb sand bags let you dial in your perfect training load from 10 to 30 pounds.

The SKLZ SpeedSac Variable Weight Resistance Training Sled offers adjustable resistance from 10 to 30 pounds via three removable sand bags, enabling tailored lower-body strength and speed workouts. Its 360-degree belt ring supports multi-directional training to improve agility and mobility, while the durable nylon shell and secure Velcro straps ensure reliable use on various surfaces. Designed for athletes of all sizes, it includes an adjustable leash and waist belt for a comfortable fit, making it a versatile and essential tool for serious speed and power development.

Specifications

Brand	SKLZ
Material	Rubber, Polyester, Nylon, PP, Steel, PU
Item Weight	2.32 Kilograms
Sport	Body Building
Included Components	Sled
Recommended Uses For Product	Workout
Special Feature	Adjustable
Model Name	SKLZ SpeedSac Variable Weight Resistance Training Sled (10-30 Pounds)
Style	Pull Up
Tension Level	30 pounds
Number of Resistance Levels	3
Manufacturer	IMPLUS
UPC	849102034175
Global Trade Identification Number	00849102034175
Item Package Dimensions L x W x H	12.6 x 12.48 x 5.04 inches
Package Weight	2.28 Kilograms
Item Dimensions LxWxH	23.5 x 12 x 5 inches
Brand Name	SKLZ
Warranty Description	1 year limited manufacturer's warranty
Suggested Users	unisex-adult
Part Number	3417
Model Year	2019
Size	One Size

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